SWANAGE BAY CASE STUDY GCSE

Coastal management strategies are being used along the Dorset coastline to prevent erosion in some areas but they have impacted the landscape and caused changes to the natural environment. It has been created by longshore drift. Chesil Beach is an example of a bar. Dorset is located in the south of England. This caused the formation of Old Harry, a stack. How is human activity, including mangement, working in combination with geomorphic processes to shape the landscape?

How is human activity, including mangement, working in combination with geomorphic processes to shape the landscape? This is made of chalk which is a harder rock. How are geomorphic processes creating coastal landforms? The arch is gradually being worn away by mechanical, chemical and biological weathering. Towards the northern end of the bay the cliffs are covered in vegetation, stablising them and protecting them from erosion. Biological weathering caused by the vegetation on the top of the headland is also breaking up the rock.

The headland juts out into the sea, so it is more vulnerable to high-energy waves. It has been created by longshore drift.

An Examination of the coast line in the Swanage Area.

A concordant coastline has the same type of rock along its length. Dorset is located in the south of England.

The area around Swanage is made up of bands of hard and soft rock. Erosion by waves opened up a crack in the headland, which then became a cave and eventually an arch. But, by stopping the movement of beach material along the coast beaches further down the coast are becoming narrower and subject to more erosion due to reduced ability to absorb wave energy.

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The Foreland, Old Harry and his Wife: How is human activity, including mangement, working in combination with geomorphic processes to gcae the landscape?

Coastal landforms – AQA – Revision 3 – GCSE Geography – BBC Bitesize

Chesil Beach is an example of a bar. The areas where the soft rock has eroded away, next to the headland, are called bays. Chemical weathering and erosion are gradually wearing down these down. The spit has continued to join to the Isle of Portland.

swanage bay case study gcse

As areas of the Dorset coast are being eroded, properities and infrastructure are at risk. However, this creates a strong backwash which removes sediment from the beach and can lead to erosion under the wall.

The limestone cliffs forming the back wall of the cove are vulnerable to mass movement and sometimes experience small slides and slumps.

How are geomorphic bag creating coastal landforms?

swanage bay case study gcse

The headland is made out of chalk, a hard rock. Erosion is ssanage dominant process in the bay with the beach losing material year on year.

They reflect waves back out to sea preventing erosion of the cliff. Groynes Groynes are wooden or stone barries which are built at right angles to the coast.

New timber groynes were installed on Swanage beach in and have reduced the loss of beach material. The arch is gradually being worn away by mechanical, chemical and biological weathering.

There is also a risk for people from landslides and rockfalls.

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swanage bay case study gcse

Behind the limestone is a layer of clay which is softer so more easily eroded. Coastlines where the xase alternates between bands of hard and soft rock which are perpendicular to the shore are called discordant coastlines. Biological weathering caused by the vegetation on the top of the headland is also breaking up the rock.

It connects the Isle of Portland to the mainland. Beach replenishment In the wintersand and shingle were dredged from the sea bed at Poole Harbour and added to the upper parts of Swanage beach creating a wider beach. Behind the spit there is The Fleet, a lagoon. They trap material being transported by longshore swanwge to baay larger beaches which can then absorb wave energy to reduce erosion rates. Towards the northern end of the bay the cliffs are covered in vegetation, stablising them and protecting them from erosion.

Swanage and Coastal Erosion

Its coastline swanwge examples of many erosional and depositional landforms. An arch at the end of the headland has collpased to form a stack called Old Harry and a stump called Old Harry’s Wife. At the back of the cove is a band of more resistant chalk, so erosion is slower here.